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Maxime Bizon b042e47491 pstore/ram: Fix undefined usage of rounddown_pow_of_two(0) 
record_size / console_size / ftrace_size can be 0 (this is how you disable
the feature), but rounddown_pow_of_two(0) is undefined. As suggested by
Kees Cook, use !is_power_of_2() as a condition to call
rounddown_pow_of_two and avoid its undefined behavior on the value 0. This
issue has been present since commit 1894a253 (ramoops: Move to
fs/pstore/ram.c).

Cc: stable@vger.kernel.org
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <ffainelli@freebox.fr>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
2012-11-17 17:40:57 -08:00
..
9p
The following changes since commit 4cbe5a555fa58a79b6ecbb6c531b8bab0650778d:
2012-10-12 09:59:23 +09:00
adfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
affs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
afs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
autofs4
autofs4 - fix reset pending flag on mount fail
2012-10-11 10:21:16 +09:00
befs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
bfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
btrfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2012-10-26 09:34:04 -07:00
cachefiles
fs: cachefiles: add support for large files in filesystem caching
2012-07-30 17:25:21 -07:00
ceph
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
2012-10-29 08:49:25 -07:00
cifs
cifs: Do not lookup hashed negative dentry in cifs_atomic_open
2012-11-05 06:45:54 -05:00
coda
fs: push rcu_barrier() from deactivate_locked_super() to filesystems
2012-10-02 21:35:55 -04:00
configfs
userns: Convert configfs to use kuid and kgid where appropriate
2012-09-18 01:01:37 -07:00
cramfs
userns: Convert cramfs to use kuid/kgid where appropriate
2012-09-21 03:13:08 -07:00
debugfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2012-10-02 11:11:09 -07:00
devpts
VFS: Pass mount flags to sget()
2012-07-14 16:38:34 +04:00
dlm
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2012-10-02 13:38:27 -07:00
ecryptfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
efs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
exofs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-12 10:52:03 +09:00
exportfs
switch dentry_open() to struct path, make it grab references itself
2012-07-23 00:01:29 +04:00
ext2
ext2: fix return values on parse_options() failure
2012-10-09 23:23:53 +02:00
ext3
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2012-10-16 18:12:38 -07:00
ext4
ext4: fix unjournaled inode bitmap modification
2012-10-28 22:24:57 -04:00
fat
fat: drop lock/unlock super
2012-10-09 23:33:38 -04:00
freevxfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
fscache
…
fuse
mm: kill vma flag VM_CAN_NONLINEAR
2012-10-09 16:22:17 +09:00
gfs2
GFS2: Test bufdata with buffer locked and gfs2_log_lock held
2012-11-07 09:43:03 +00:00
hfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
hfsplus
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
hostfs
Merge branch 'for-linus-37rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
2012-10-10 11:15:20 +09:00
hpfs
hpfs: drop lock/unlock super
2012-10-09 23:33:38 -04:00
hppfs
hppfs: fix the return value of get_inode()
2012-10-09 22:34:52 +02:00
hugetlbfs
mm: replace vma prio_tree with an interval tree
2012-10-09 16:22:39 +09:00
isofs
tmpfs,ceph,gfs2,isofs,reiserfs,xfs: fix fh_len checking
2012-10-09 23:33:55 -04:00
jbd
jbd: Fix assertion failure in commit code due to lacking transaction credits
2012-09-12 15:52:03 +02:00
jbd2
The big new feature added this time is supporting online resizing
2012-10-08 06:36:39 +09:00
jffs2
UAPI Disintegration 2012-10-09
2012-10-09 15:04:25 +01:00
jfs
jfs: Fix FITRIM argument handling
2012-10-17 09:18:38 -05:00
lockd
LOCKD: Clear ln->nsm_clnt only when ln->nsm_users is zero
2012-10-24 10:46:22 -04:00
logfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
minix
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
ncpfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
nfs
NFS4: nfs4_opendata_access should return errno
2012-11-02 18:51:54 -04:00
nfs_common
…
nfsd
UAPI Disintegration 2012-10-09
2012-10-09 18:35:22 -04:00
nilfs2
mm: kill vma flag VM_CAN_NONLINEAR
2012-10-09 16:22:17 +09:00
nls
nls: fix (and rename) mac NLS table files and config options
2012-06-01 19:51:22 -07:00
notify
fanotify: fix missing break
2012-11-09 06:41:47 +01:00
ntfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
ocfs2
mm: kill vma flag VM_CAN_NONLINEAR
2012-10-09 16:22:17 +09:00
omfs
omfs: convert to use beXX_add_cpu()
2012-10-06 03:05:31 +09:00
openpromfs
fs: push rcu_barrier() from deactivate_locked_super() to filesystems
2012-10-02 21:35:55 -04:00
proc
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-10-24 04:07:02 +03:00
pstore
pstore/ram: Fix undefined usage of rounddown_pow_of_two(0)
2012-11-17 17:40:57 -08:00
qnx4
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
qnx6
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
quota
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2012-10-16 18:12:38 -07:00
ramfs
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
reiserfs
tmpfs,ceph,gfs2,isofs,reiserfs,xfs: fix fh_len checking
2012-10-09 23:33:55 -04:00
romfs
fs: push rcu_barrier() from deactivate_locked_super() to filesystems
2012-10-02 21:35:55 -04:00
squashfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
sysfs
sysfs: sysfs_pathname/sysfs_add_one: Use strlcat() instead of strcat()
2012-10-24 15:57:14 -07:00
sysv
sysv: drop lock/unlock super
2012-10-09 23:33:39 -04:00
ubifs
mm: kill vma flag VM_CAN_NONLINEAR
2012-10-09 16:22:17 +09:00
udf
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2012-10-04 09:14:01 -07:00
ufs
ufs: drop lock/unlock super
2012-10-09 23:33:39 -04:00
xfs
xfs: fix reading of wrapped log data
2012-11-08 11:10:51 -06:00
aio.c
aio: now fput() is OK from interrupt context; get rid of manual delayed __fput()
2012-07-22 23:57:59 +04:00
anon_inodes.c
…
attr.c
ima: add inode_post_setattr call
2012-09-07 14:57:46 -04:00
bad_inode.c
don't pass nameidata to ->create()
2012-07-14 16:34:47 +04:00
binfmt_aout.c
coredump: pass siginfo_t* to do_coredump() and below, not merely signr
2012-10-06 03:05:16 +09:00
binfmt_elf_fdpic.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
2012-10-10 12:02:25 +09:00
binfmt_elf.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
2012-10-10 12:02:25 +09:00
binfmt_em86.c
…
binfmt_flat.c
coredump: pass siginfo_t* to do_coredump() and below, not merely signr
2012-10-06 03:05:16 +09:00
binfmt_misc.c
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
binfmt_script.c
…
binfmt_som.c
…
bio-integrity.c
block: Ues bi_pool for bio_integrity_alloc()
2012-09-09 10:35:38 +02:00
bio.c
vfs: fix: don't increase bio_slab_max if krealloc() fails
2012-10-22 22:00:26 +02:00
block_dev.c
Lock splice_read and splice_write functions
2012-10-28 10:59:37 -07:00
buffer.c
The big new feature added this time is supporting online resizing
2012-10-08 06:36:39 +09:00
char_dev.c
char_dev: pin parent kobject
2012-10-22 08:50:37 +03:00
compat_binfmt_elf.c
coredump: extend core dump note section to contain file names of mapped files
2012-10-06 03:05:17 +09:00
compat_ioctl.c
fs/compat_ioctl.c: VIDEO_SET_SPU_PALETTE missing error check
2012-10-25 14:37:53 -07:00
compat.c
vfs: define struct filename and have getname() return it
2012-10-12 20:14:55 -04:00
coredump.c
fix a leak in replace_fd() users
2012-10-16 13:36:50 -04:00
coredump.h
coredump: update coredump-related headers
2012-10-06 03:05:15 +09:00
dcache.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
dcookies.c
…
direct-io.c
block: move down direct IO plugging
2012-08-09 15:23:09 +02:00
drop_caches.c
…
eventfd.c
eventfd: change int to __u64 in eventfd_signal()
2012-05-31 17:49:32 -07:00
eventpoll.c
revert "epoll: support for disabling items, and a self-test app"
2012-11-09 06:41:46 +01:00
exec.c
freezer: exec should clear PF_NOFREEZE along with PF_KTHREAD
2012-10-25 22:28:12 +02:00
fcntl.c
Fix F_DUPFD_CLOEXEC breakage
2012-10-09 15:52:31 +09:00
fhandle.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
fifo.c
fifo: Do not restart open() if it already found a partner
2012-07-16 08:33:14 -07:00
file_table.c
lglock: add DEFINE_STATIC_LGLOCK()
2012-10-10 01:15:44 -04:00
file.c
Return the right error value when dup[23]() newfd argument is too large
2012-10-30 21:27:28 -07:00
filesystems.c
vfs: define struct filename and have getname() return it
2012-10-12 20:14:55 -04:00
fs_struct.c
get rid of ->mnt_longterm
2012-07-14 16:32:47 +04:00
fs-writeback.c
Merge branch 'writeback-for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux
2012-10-12 10:46:03 +09:00
generic_acl.c
userns: Pass a userns parameter into posix_acl_to_xattr and posix_acl_from_xattr
2012-09-18 01:01:35 -07:00
inode.c
mm: replace vma prio_tree with an interval tree
2012-10-09 16:22:39 +09:00
internal.h
vfs: make path_openat take a struct filename pointer
2012-10-12 20:15:09 -04:00
ioctl.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
ioprio.c
Merge branch 'for-3.5/core' of git://git.kernel.dk/linux-block
2012-05-30 08:52:42 -07:00
Kconfig
…
Kconfig.binfmt
coredump: make core dump functionality optional
2012-10-06 03:05:15 +09:00
libfs.c
vfs: fix kerneldoc for generic_fh_to_parent()
2012-09-05 10:59:30 +02:00
locks.c
UAPI Disintegration 2012-10-09
2012-10-09 18:35:22 -04:00
Makefile
coredump: make core dump functionality optional
2012-10-06 03:05:15 +09:00
mbcache.c
…
mount.h
get rid of magic in proc_namespace.c
2012-07-14 16:32:48 +04:00
mpage.c
…
namei.c
VFS: don't do protected {sym,hard}links by default
2012-10-26 10:05:07 -07:00
namespace.c
vfs: define struct filename and have getname() return it
2012-10-12 20:14:55 -04:00
no-block.c
…
open.c
vfs: make path_openat take a struct filename pointer
2012-10-12 20:15:09 -04:00
pipe.c
pipe(2) - race-free error recovery
2012-09-26 21:08:52 -04:00
pnode.c
VFS: Make clone_mnt()/copy_tree()/collect_mounts() return errors
2012-07-14 16:37:27 +04:00
pnode.h
…
posix_acl.c
userns: Convert vfs posix_acl support to use kuids and kgids
2012-09-18 01:01:35 -07:00
proc_namespace.c
get rid of magic in proc_namespace.c
2012-07-14 16:32:48 +04:00
read_write.c
compat: fs: Generic compat_sys_sendfile implementation
2012-10-02 21:35:55 -04:00
read_write.h
compat: fs: Generic compat_sys_sendfile implementation
2012-10-02 21:35:55 -04:00
readdir.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
select.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
seq_file.c
userns: Make seq_file's user namespace accessible
2012-08-14 21:47:55 -07:00
signalfd.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
splice.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
stack.c
…
stat.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-10-02 20:25:04 -07:00
statfs.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
super.c
vfs: drop lock/unlock super
2012-10-09 23:33:39 -04:00
sync.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
timerfd.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
utimes.c
switch simple cases of fget_light to fdget
2012-09-26 22:20:08 -04:00
xattr_acl.c
userns: Fix posix_acl_file_xattr_userns gid conversion
2012-10-12 13:16:48 -07:00
xattr.c
fs, xattr: fix bug when removing a name not in xattr list
2012-10-18 12:35:58 -07:00